气候变化领域集成服务门户(CCPortal): Understanding variability in root zone storage capacity in boreal regions

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DOI	10.5194/hess-23-125-2019
	Understanding variability in root zone storage capacity in boreal regions
	De Boer-Euser T.; Merio L.-J.; Marttila H.
发表日期	2019
ISSN	1027-5606
起始页码	125
结束页码	138
卷号	23 期号:1
英文摘要	The root zone storage capacity (Sr) of vegetation is an important parameter in the hydrological behaviour of a catchment. Traditionally, Sr is derived from soil and vegetation data. However, more recently a new method has been developed that uses climate data to estimate Sr based on the assumption that vegetation adapts its root zone storage capacity to overcome dry periods. This method also enables one to take into account temporal variability of derived Sr values resulting from changes in climate or land cover. The current study applies this new method in 64 catchments in Finland to investigate the reasons for variability in Sr in boreal regions. Relations were assessed between climate-derived Sr values and climate variables (precipitation-potential evaporation rate, mean annual temperature, max snow water equivalent, snow-off date), detailed vegetation characteristics (leaf cover, tree length, root biomass), and vegetation types. The results show that in particular the phase difference between snow-off date and onset of potential evaporation has a large influence on the derived Sr values. Further to this it is found that (non-)coincidence of snow melt and potential evaporation could cause a division between catchments with a high and a low Sr value. It is concluded that the climate-derived root zone storage capacity leads to plausible Sr values in boreal areas and that, apart from climate variables, catchment vegetation characteristics can also be directly linked to the derived Sr values. As the climate-derived Sr enables incorporating climatic and vegetation conditions in a hydrological parameter, it could be beneficial to assess the effects of changing climate and environmental conditions in boreal regions. © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	Catchments; Digital storage; Evaporation; Runoff; Snow; Vegetation; Climate variables; Environmental conditions; Hydrological parameters; Mean annual temperatures; Potential evaporation; Snow water equivalent; Temporal variability; Vegetation condition; Climate change; Boreal Kingdom; catchment; climate change; environmental conditions; hydrological modeling; land cover; rhizosphere; temporal variation; vegetation type; water storage; Finland
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159798
作者单位	De Boer-Euser, T., Water Resources Section, Faculty of Civil Engineering and Geosciences, Delft University of Technology, P.O. Box 5048, GA Delft, 2600, Netherlands, Department of Civil Engineering, Eduardo Mondlane University, C.P. 257, Maputo, Mozambique; Merio, L.-J., Water Resources and Environmental Engineering Research Unit, Oulu University, PO Box 4300, Oulu, 90014, Finland; Marttila, H., Water Resources and Environmental Engineering Research Unit, Oulu University, PO Box 4300, Oulu, 90014, Finland
推荐引用方式 GB/T 7714	De Boer-Euser T.,Merio L.-J.,Marttila H.. Understanding variability in root zone storage capacity in boreal regions[J],2019,23(1).
APA	De Boer-Euser T.,Merio L.-J.,&Marttila H..(2019).Understanding variability in root zone storage capacity in boreal regions.Hydrology and Earth System Sciences,23(1).
MLA	De Boer-Euser T.,et al."Understanding variability in root zone storage capacity in boreal regions".Hydrology and Earth System Sciences 23.1(2019).